Embed Qt in an X11 window

[vladbogo]

Hi,

I am trying to embed Qt in an X11 window. My current approach uses the QWidget::create function:
@
class QTkMainWindow: public QWidget {
public:
QTkMainWindow(WId win)
:QWidget() {
QWidget::create(win, true, true);
}
};

void createApp(int argc, char **argv) {
    Display *d;
    Window w;
    XEvent e;
    int s;

    d = XOpenDisplay(NULL);
    s = DefaultScreen(d);
    w = XCreateSimpleWindow(d, RootWindow(d, s), 10, 10, 100, 100, 1,
                       BlackPixel(d, s), WhitePixel(d, s));
    XSelectInput(d, w, ExposureMask | KeyPressMask);
    

    QApplication *qapp = new QApplication(argc, argv);
    QTkMainWindow *win = new QTkMainWindow(w);
    win->show();        

    XMapWindow(d, w);

    while (1) {
        XNextEvent(d, &e);
        qapp->processEvents();
        if (e.type == KeyPress)
            break;
    }
}

@

but unfortunately I get two windows instead of one.

Can anyone give me some suggestion about what I might be missing or what different approach should I use?

Thanks,
Vlad

[sierdzio]

Can I ask why? Qt on Linux uses X11 so it will create a X11 window for you automatically, no need to do it by hand... but you probably do have some specific use case.

[vladbogo]

I am currently trying to make a new Qt display manager for a program that actually uses Tk and the whole logic is for Tk, so embedding Qt will help me reduce a lot of effort.
I was unsuccessful embedding Qt in Tk using the same approach, so I tried to embed in a raw X11 window to see if I miss something and also because I found more reference to Qt in X11 then Qt in Tk.

So any suggestion on how to embed Qt in either X11 or Tk because it would really help me?